added support for userdir without a passwd entry
git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-merge-1.4.x@801 152afb58-edef-0310-8abb-c4023f1b3aa9
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@ -20,12 +20,14 @@ typedef struct {
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array *exclude_user;
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array *include_user;
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buffer *path;
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buffer *basepath;
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} plugin_config;
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typedef struct {
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PLUGIN_DATA;
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buffer *username;
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buffer *temp_path;
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plugin_config **config_storage;
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@ -39,6 +41,7 @@ INIT_FUNC(mod_userdir_init) {
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p = calloc(1, sizeof(*p));
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p->username = buffer_init();
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p->temp_path = buffer_init();
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return p;
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}
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@ -58,6 +61,7 @@ FREE_FUNC(mod_userdir_free) {
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array_free(s->include_user);
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array_free(s->exclude_user);
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buffer_free(s->path);
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buffer_free(s->basepath);
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free(s);
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}
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@ -65,6 +69,7 @@ FREE_FUNC(mod_userdir_free) {
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}
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buffer_free(p->username);
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buffer_free(p->temp_path);
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free(p);
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@ -79,9 +84,10 @@ SETDEFAULTS_FUNC(mod_userdir_set_defaults) {
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config_values_t cv[] = {
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{ "userdir.path", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
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{ "userdir.exclude-user", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
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{ "userdir.include-user", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
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{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
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{ "userdir.exclude-user", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
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{ "userdir.include-user", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
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{ "userdir.basepath", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 3 */
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{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
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};
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if (!p) return HANDLER_ERROR;
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@ -95,10 +101,12 @@ SETDEFAULTS_FUNC(mod_userdir_set_defaults) {
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s->exclude_user = array_init();
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s->include_user = array_init();
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s->path = buffer_init();
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s->basepath = buffer_init();
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cv[0].destination = s->path;
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cv[1].destination = s->exclude_user;
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cv[2].destination = s->include_user;
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cv[3].destination = s->basepath;
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p->config_storage[i] = s;
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@ -119,6 +127,7 @@ static int mod_userdir_patch_connection(server *srv, connection *con, plugin_dat
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PATCH(path);
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PATCH(exclude_user);
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PATCH(include_user);
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PATCH(basepath);
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/* skip the first, the global context */
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for (i = 1; i < srv->config_context->used; i++) {
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@ -138,6 +147,8 @@ static int mod_userdir_patch_connection(server *srv, connection *con, plugin_dat
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PATCH(exclude_user);
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} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("userdir.include-user"))) {
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PATCH(include_user);
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} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("userdir.basepath"))) {
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PATCH(basepath);
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}
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}
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}
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@ -151,10 +162,12 @@ URIHANDLER_FUNC(mod_userdir_docroot_handler) {
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int uri_len;
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size_t k;
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char *rel_url;
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struct passwd *pwd;
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#ifdef HAVE_PWD_H
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struct passwd *pwd = NULL;
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#endif
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if (con->uri.path->used == 0) return HANDLER_GO_ON;
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#ifdef HAVE_PWD_H
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mod_userdir_patch_connection(srv, con, p);
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uri_len = con->uri.path->used - 1;
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@ -170,12 +183,23 @@ URIHANDLER_FUNC(mod_userdir_docroot_handler) {
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return HANDLER_FINISHED;
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}
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/* /~/ is a empty username, catch it directly */
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if (0 == rel_url - (con->uri.path->ptr + 2)) {
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return HANDLER_GO_ON;
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}
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buffer_copy_string_len(p->username, con->uri.path->ptr + 2, rel_url - (con->uri.path->ptr + 2));
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if (NULL == (pwd = getpwnam(p->username->ptr))) {
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if (buffer_is_empty(p->conf.basepath)
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#ifdef HAVE_PWD_H
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&& NULL == (pwd = getpwnam(p->username->ptr))
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#endif
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) {
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/* user not found */
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return HANDLER_GO_ON;
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}
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for (k = 0; k < p->conf.exclude_user->used; k++) {
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data_string *ds = (data_string *)p->conf.exclude_user->data[k];
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@ -192,7 +216,7 @@ URIHANDLER_FUNC(mod_userdir_docroot_handler) {
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data_string *ds = (data_string *)p->conf.include_user->data[k];
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if (buffer_is_equal(ds->value, p->username)) {
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/* user in exclude list */
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/* user in include list */
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found_user = 1;
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break;
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}
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@ -201,17 +225,56 @@ URIHANDLER_FUNC(mod_userdir_docroot_handler) {
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if (!found_user) return HANDLER_GO_ON;
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}
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/* we build the physical path */
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buffer_copy_string(con->physical.path, pwd->pw_dir);
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BUFFER_APPEND_SLASH(con->physical.path);
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buffer_append_string_buffer(con->physical.path, p->conf.path); /* skip the / */
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BUFFER_APPEND_SLASH(con->physical.path);
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buffer_append_string(con->physical.path, rel_url + 1); /* skip the / */
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return HANDLER_GO_ON;
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#else
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return HANDLER_ERROR;
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/* we build the physical path */
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if (buffer_is_empty(p->conf.basepath)) {
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#ifdef HAVE_PWD_H
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buffer_copy_string(p->temp_path, pwd->pw_dir);
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#endif
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} else {
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char *cp;
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/* check if the username is valid
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* a request for /~../ should lead to a directory traversal
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* limiting to [-_a-z0-9.] should fix it */
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for (cp = p->username->ptr; *cp; cp++) {
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char c = *cp;
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if (!(c == '-' ||
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c == '_' ||
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c == '.' ||
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(c >= 'a' && c <= 'z') ||
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(c >= 'A' && c <= 'Z') ||
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(c >= '0' && c <= '9'))) {
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return HANDLER_GO_ON;
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}
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}
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buffer_copy_string_buffer(p->temp_path, p->conf.basepath);
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BUFFER_APPEND_SLASH(p->temp_path);
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buffer_append_string_buffer(p->temp_path, p->username);
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}
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BUFFER_APPEND_SLASH(p->temp_path);
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buffer_append_string_buffer(p->temp_path, p->conf.path);
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if (buffer_is_empty(p->conf.basepath)) {
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struct stat st;
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int ret;
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ret = stat(p->temp_path->ptr, &st);
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if (ret < 0 || S_ISDIR(st.st_mode) != 1) {
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return HANDLER_GO_ON;
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}
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}
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BUFFER_APPEND_SLASH(p->temp_path);
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buffer_append_string(p->temp_path, rel_url + 1); /* skip the / */
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buffer_copy_string_buffer(con->physical.path, p->temp_path);
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buffer_reset(p->temp_path);
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return HANDLER_GO_ON;
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}
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/* this function is called at dlopen() time and inits the callbacks */
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